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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>14-九九乘法表案例</title>
</head>
<body>
    <script>
          /* 
             九九乘法表:双重for循环

             *
             **
             ***
             ****
             *****
             ******
             *******
             ********
             *********

             i    num(j 的最大值)
             0     1
             1     2
             2     3
             
             i + 1 = num
        */

        for (i=1; i<=9; i++){
            let star = '';
            for (j=1; j<=i; j++){
                star = star + (i + '*' +j + '=' + i*j) + ' ';
            }
            console.log(star);
        }





/* 
        for (let i = 1; i<= 9; i++){
            let star = '';
            for(let j = 1; j < i+1;j++){
                star = star + (i + '*' + j + '=' + i * j) +' ';
            }
            console.log(star);
        } */
    </script>
</body>
</html>